  <!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xHTML1/DTD/xHTML1-transitional.dtd">
<HTML XMLns="http://www.w3.org/1999/xHTML" lang="gb2312">
<head>
<title> 阻止JS事件冒泡传递（cancelBubble 、stopPropagation）</title>
<meta name="keywords" content="JS,事件冒泡,cancelBubble,stopPropagation" charset=utf-8/>
<!--[if !IE]> -->
  <script src="http://cdn.bootcss.com/jquery/2.2.0/jquery.min.js"></script>
  <!-- <![endif]-->
  <!--[if IE]>
      <script src="http://cdn.bootcss.com/jquery/1.12.0/jquery.js"></script>
  <![endif]-->




</head>
<body>
	<input type="text" name="" id="results" value=""/> 
	
	<div>
		<button id="customBtn" value="test">提交</button>
		<input type="button" id="test1" value="get attr"/>
    	<input type="button" id="test2" value="get val"/>
	</div>
<div id="parent1" onclick="alert(this.id)" style="width:250px;background-color:yellow">
<p>This is parent1 div.</p>
<div id="child1" onclick="alert(this.id)" style="width:200px;background-color:orange">
   <p>This is child1.</p>
</div>
<p>This is parent1 div.</p>
</div>
<br />
<div id="parent2" onclick="alert(this.id)" style="width:250px;background-color:cyan;">
<p>This is parent2 div.</p>
<div id="child2" onclick="doSomething(this,event);" style="width:200px;background-color:lightblue;">
   <p>This is child2. Will bubble.</p>
</div>
<p>This is parent2 div.</p>
</div>
<script>

function doSomething (obj,evt) {
alert(obj.id);
var e=(evt)?evt:window.event;
if (window.event) {
   e.cancelBubble=true;     // ie下阻止冒泡
} else {
   //e.preventDefault();
   e.stopPropagation();     // 其它浏览器下阻止冒泡
}
}
 $(function() {
 	$('#customBtn').click(function() {
            alert($('#customBtn').val());    
        });
        $('#test1').click(function() {
            alert($('#customBtn').attr('value'));    
        });
        $('#test2').click(function() {
            alert($('#customBtn').val());    
        });
        var content = $('#results').val(); 
	if(content.trim() == '') 
	alert('空'); 
    });

</script>
</body>
</HTML>